The right stuff for the next giant Leap

During an October 19 chat on NASA TV, Sunita Williams and Robert Behnken, two of the four NASA astronauts selected to train and prepare for future commercial spaceflights from U.S. soil, discussed the importance of the Commercial Crew Program to the future of human spaceflight.

The veteran astronauts also fielded questions from social media followers about their training, the mission ahead of them and the work NASA is doing to advance efforts to send humans to Mars in the 2030s.